SU481882A2 - Jet Level Control - Google Patents

Description

(54) JET LEVEL REGULATOR

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This invention relates to the regulation of the level of a liquid in a vessel, in particular in a drum of a low-power steam boiler.

Known liquid level regulator in the vessel according to the main author. St. N 398929, comprising two vertical nozzles, between which two diaphragms with openings are installed. However, with its help, it is impossible to adjust the level in the vessel / with a high overpressure (5-10kgs / cm and above).

The purpose of the invention is to expand the scope.

For its implementation, a cut-off device is installed in the cavity between the diaphragms, made in the form of a floating membrane located between the drain nozzle and the channel connecting the cavity between the diaphragms and the vessel.

The drawing shows a regulator circuit.

The jet liquid level regulator consists of two vertically mounted nozzles 1 and 2 connected by a channel 3 with a source of fluid flow filling the vessel4,

two diaphragms 5 and 6 with openings, thrusts, a sel 7 and a shut-off device 8. The shut-off device includes a floating membrane 9 and a drain nozzle 10.

The throttle 7 is configured in such a way that when the level of the liquid in the vessel 4 is below the diaphragm 5, the zone of impact of the jets emanating from the nozzles 1 and 2 is below the diaphragms. In this case, the vessel is filled with liquid, and the membrane 9 overlaps the drain nozzle 10 under the action of pressure in the chamber 11 supplied by the vessel 4 through the channel 12.

An increase in the level of the liquid in the vessel leads to the flooding of the jet flowing out of the nozzle 1. The jet loses kinetic energy, and the zone of impact of the jets shifts into the cavity 13 between the orifices. In this cavity, a pressure that exceeds the pressure in the vessel arises, and the membrane 9 moves, opening the drain nozzle 1O. As a result, the entire flow of fluid enters the drain and the pouring into the vessel is stopped.

Shut-off mouth () The function maintains the pressure in the lujjiiic-m l.i approximately equal to the depth in the vessel. Therefore, the change in pressure to the vessel does not affect. thorn G1 re d (L et and o about r and e and u

, n regulator urop liquid.

but ant. St. N 308929, about tl and h and 1l and yen so that, for the purpose of dissipating the field of application, a cut-off device installed in the form of a floating membrane was placed between the nozzle installed on the discharge line, and the channel connecting the hollow between the diaphragms to the vessel